after campaigning in pennsylvania today, romney heads to a fund-raiser in massachusetts. and both candidates are preparing for their first debate wednesday night in colorado where they'll tackle domestic policy issues. >>> we're following a developing story from minnesota where police in minneapolis are investigating a deadly workplace shooting yesterday afternoon at a sign company. we don't have an exact death toll this morning, but police are saying that several people were killed, including shooter who died of a self-inflicted gunshot wound. three people were taken to the hospital in critical condition. >>> in los angeles, investigators are awaiting toxicology tests on an actor who allegedly murdered his elderly landlady and plunged to his death. 28-year-old johnny lewis was killed off a show "sons of anarchy" and had a number of smaller roles. he was accused of taking two men with a bottle and trying to break into a woman's home. probation officers and his attorney expressed concern over his mental health and drug use. >>> a day-long amber alert for a missing 3-week-o